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Radio Shack EC-400

The Radio Shack EC-400 is an arithmetic calculator with algebraic logic. It has 8 functions, 25 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack. Note: Bowmar MX-90

Facts at a glance:

FeatureValue
TypeArithmetic
Functions8
Keys25
LogicAlgebraic
Display typeLED
Length133mm
Width80mm
Power SourceSealed battery pack
Year introduced1975

Replacements:

If you have a Radio Shack EC-400 that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by Radio Shack